P808A Microstepping Drive

P808A Astrosyn Microstepping Drive 7.7A


Out of stock

SKU: P808A

Product Description

The model P808A is a high performance microstepping driver suitable for 2-phase and 4-phase hybrid steppers requiring a drive current of up to 7.7A / phase.

The design features an advanced bipolar constant-current chopper circuit with current control Technology. This driver is suited to stepper motor control applications requiring low noise, low vibration, high speed and high precision.  TTL compatible and optically isolated input signals.

It is constructed from black coated aluminium with integral heat sink and protected overcurrent, overvoltage and short circuit.

By using advanced bipolar constant-current chopping techniques, it can produce more speed and power from the same motor, compared with traditional technologies such as L/R drivers.  It has patented current control technology, which allows coil currents to be accurately controlled, generating much less current ripple and motor heating than other drivers on the market.

Suitable for a wide range of stepping motors of size NEMA 17,23, 34 and 42.  Usable for various kinds of machines, such as X-Y Tables, Labeling machines, laser cutters, engraving machines, and pick-up devices; particularly useful in applications with low noise, low vibration, high speed and high precision requirements.

This drive uses differential inputs to increase noise immunity and interface flexibility.  Single-ended control signals from the indexer/controller can also be accepted by this interface.The input circuit has built-in high-speed optocoupler, and can accept signals in the format of line driver, open-collector, or PNP output.  Line drive (Differential) signals are suggested for reliability.

Key Features

  • Supply voltage to +90Vdc, current to 7.7A
  • Inaudiable 20khz chopping frequency
  • TTL compatible and optically isolated input signals
  • Automatic idle current reduction
  • Mixed-decay current control for reduced motor heating
  • 15 selectable step resolutions in decimal and binary
  • Microstepping to 51,200 steps/revolution
  • Suitable for 4, 6, and 8 lead wire motors
  • Overcurrent and overvoltage protected
  • Short circuit protected
  • Compact size

Additional Information

Weight .450 kg
Dimensions 120 x 100 x 50 cm

Data Sheets

PDF: P808A Stepper Motor Drive Technical Datasheet


Guide to Stepper Motor Drive Selection

Q: How can I work out which stepper motor drive I need?
A: If you are new to these products we suggest that you start by reading our technical guides to stepper motors and stepper motor drives. These may be downloaded through the Technical section of this website. With this overview you will then need to review the motor and drive product ranges, e.g., unipolar or bipolar drive mode, drive voltage and current, size and style of drive etc.

Q: Are your products suitable for worldwide use?
A: In general, yes, as they are DC powered and designed to International Standards.

Q: Are the products compliant with EU safety standards and directives?
A: Yes, we apply all relevant European Directives to our designs, and where appropriate, carry out EMC testing in independent laboratories.

Q: Are the products compliant with the RoHS Directive?
A: Our materials and manufacturing processes were converted to RoHS-compliance several years ago. All of our current products are fully RoHS-compliant.

Q: Do you accept credit card payment for goods?

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